<template>
  <!-- 放置一个图标 -->
  <div style="display:inline-block">
    <svg-icon
      :icon-class="isFull ? 'exit-fullscreen' : 'fullscreen' "
      class="fullscreen"
      @click="changeToggle"
    />
  </div>
</template>

<script>

import screenfull from 'screenfull'

export default {
  name: 'ScreenFull',
  data() {
    return {
      isFull: false // 非全屏
    }
  },
  created() {
  // ESC会改变当前的全屏状态
    // screenfull是插件，它自带事件监听 on
    // screenfull.isFullscreen ：插件自带的属性，表示当前是否处于全屏状态
    screenfull.on('change', () => {
      console.log('当前是否是全屏', screenfull.isFullscreen)
      this.isFull = screenfull.isFullscreen
    })
  },
  methods: {
    // 实现全屏切换
    changeToggle() {
      screenfull.toggle()
      this.isFull = !this.isFull
    }
  }
}
</script>

<style lang="scss" scoped>
.fullscreen {
  width: 20px;
  height: 20px;
  color: #fff;
  cursor: pointer;
  margin-right: 10px;
}
</style>
